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Finding the Third Proportional to 4,979.25 and 7,457.63

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Solution

The third proportional to 4,979.25 and 7,457.63 is: 11,169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.25 : 7,457.63 = 7,457.63 : x
  2. Step 2: Convert to fraction form
    4,979.25/7,457.63 = 7,457.63/x
  3. Step 3: Cross multiply
    4,979.25x = 7,457.63 × 7,457.63
  4. Step 4: Simplify right side
    4,979.25x = 55,616,170.64
  5. Step 5: Solve for x
    x = 55,616,170.64/4,979.25
  6. Step 6: Final answer
    x = 11,169.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.